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电压波 |
voltage wave : 38 phrases in 11 subjects |
Air defense | 1 |
Aviation | 1 |
Electric machinery | 3 |
Electricity generation | 1 |
Electronics | 11 |
General | 1 |
Hydroelectric power stations | 1 |
Information technology | 4 |
Radio | 2 |
Technology | 12 |
Telecommunications | 1 |